Jonah Hill plays a hapless babysitter in his new movie. How did he fare with a TIME writer's 2-year-old?

Getting a babysitter is never easy. So when I saw posters for Jonah Hill's new movie The Sitter--just his derelict mug shot and the tagline "Need a sitter?"--I thought, Why not? I called to ask if he'd watch my 2-year-old son Laszlo for a couple of hours on a Sunday while my wife and I got brunch. He's our first babysitter to show up in a Lincoln Town Car with a driver.

We had already told Laszlo a lot about Jonah, who's 27 and best known for his foulmouthed cocky-nerd roles in the Judd Apatow movies Knocked Up, Funny People and...